08253303 is referenced by 84 patents and cites 480 patents.

An apparatus, system, and method for driving an end effector in a surgical instrument are disclosed. The method comprises generating a first ultrasonic drive signal by a generator, actuating the ultrasonic transducer with the first ultrasonic drive signal for a first period, generating a second ultrasonic drive signal by the generator, and actuating the ultrasonic transducer with the second ultrasonic drive signal for a second period, subsequent to the first period. The first drive signal second drive signal are different over the first and second periods. The first and second drive signals define a step function waveform over the first and second periods. The apparatus comprises a generator to couple to an ultrasonic instrument. The system comprises a generator coupled to an ultrasonic instrument comprising an ultrasonic drive system comprising an ultrasonic transducer coupled to a waveguide and an end effector. The ultrasonic drive system resonates at a resonate frequency.

Title
Ultrasonic device for cutting and coagulating with stepped output
Application Number
13/294576
Publication Number
8253303 (B2)
Application Date
November 11, 2011
Publication Date
August 28, 2012
Inventor
Daniel J Abbott
Loveland
OH, US
Brian DiNardo
Cincinnati
OH, US
Jeffrey D Messerly
Cincinnati
OH, US
Eitan T Wiener
Cincinnati
OH, US
Robert J Beetel
Redwood City
CA, US
James R Giordano
Milford
OH, US
Assignee
Ethicon Endo Surgery
OH, US
IPC
H01L 41/09
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